• 제어로봇시스템학회논문지
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• 제18권12호
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• pp.1073-1078
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• 2012

This paper deals with the trajectory planning of multi agent robots using complex potential theory for robot soccer. The complex potential theory is introduced, then the circle theorem is used to avoid obstacles, and the vortex pair is used to make precise kicking direction of robot. Various situations of robot soccer are simulated and the effect of vortex strength and the speed of robots are discussed and the better way to avoid obstacles and to kick the precise direction is found. The feasibilities of complex potential theory to apply for the multi agent robots are successful.

• Journal of Chest Surgery
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• 제16권2호
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• pp.255-259
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• 1983

Thirteen cases of traumatic diaphragmatic injuries treated at the Dept. of Thoracic & Cardiovascular Surgery in Kyung-Hee University Hospital from Jan. 1973 to Dec. 1982, were reviewed in this study. 1. Of 13 cues, 11 were male and 2 were female, a ratio of 5.5:1. This ratio revealed high incidence in male patients. The age distribution was ranged from 2 to 59 years. 2. The causes of traumatic diaphragmatic injuries; 6 were traffic accidents, 4 were stab wounds, 1 was falling down, 1 was gun shot wound and 1 was kick. 3. Operation were performed in 11 patients. No operation was done in 2 patients. 4. There were 100% of other associated injuries, the most frequent was having hemothorax. 5. 2 cases of death occurred in not operated patients. One was intracranial hematoma, and the other was hypertensive encephalopathy.

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2001년도 e-Biz World Conference
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• pp.477-486
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• 2001

⊙ '99. 12 - '00. 8 : 전자 4사 중심 표준화 추진 ㆍ 부품표준화 ㆍ EDI ㆍ 공개구매 및 전자입찰 ⊙ '00. 8. 30: 부품 및 EDI 표준(안) 공청회 및 W/G Kick Off 실시 ㆍ 내역 - 부품분류체계 및 특성항목 ; Level 1(59), Level 2(287), Level 3(361), Level 4(105) - 20종 EDI; 견적 4종, 주문 4종, 납품 5종, 입고 4종, 세금계산서 3종 - 22품종 W/G 발족 ㆍ 장소; 강남 섬유센터(10:30-16:00) ㆍ 참석업체 ; LG전자, 삼성전기외 65여 업체, 107명 참석, ⊙ '00. 9-'00.9 : e-Catalogue 부품표준화 추진 (22품종) ⊙ '00. 10-'00.12 : e-Catalogue 추진 범위 확대 ⊙ '00. 12. 19 : 1차 대상품종 e-Catalogue 표준 확정 ⊙ '01. 1 - : 2차 대상품종 e-Catalogue 표준화 추진(12품종)(중략)

• Journal of Korean Neurosurgical Society
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• 제48권6호
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• pp.538-540
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• 2010

Lumbar disc herniation is extremely uncommon in children below 10 years of age. A 7-year-old boy is reported who presented with low back pain and left leg radiating pain. The pain started seven days prior to presentation and was attributed to performing the jumping kick without any previous warm-up. Magnetic resonance imaging revealed a posterolateral disc herniation at the L3-4 level and multiple degenerative changes. The patient received conservative treatment including limitation of sports activities, anti-inflammatory and muscle relaxant medications as well as physical therapy. After three months of the aggressive treatment the child was symptom free. We present here a lumbar disc herniation in one of the youngest patient.

• 한국수의병리학회지
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• 제5권2호
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• pp.43-48
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• 2001

Ducklings collected from three farms, having history of rapid onset and spread of nerve signs including kick spasmodically with legs and opisthotonos, were pathologically, barteriologically, virologically examined. Grossly, multiple petechial to ecchymotic hemorrhages were detected in the swollen liver. Histopathologically, diffuse coagulative necrosis of hepatocytes was characteristic in acute cases. Chronic cases revealed marked bile duct hyperplasia rather than hepatocyte necrosis. Some of these cases exhibited multiple granulomas consisting of macrophages, heterophil, fibrin and necrotic cell debri. Filtered homogenate of livers sampled from ducklings caused embryo death with marked hemorrhage and swollen of liver after inoculation into chorioallantoic membrane. Three strains of Salmonella app.,S montevideo, S hadar, and S give, which were biochemically and serologically identified, weir isolated from ducklings of three farms, respectively. From these results, these ducklings were concurrently infected with duck hepatitis virus and Salmonella spp.

• 한국운동역학회지
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• 제20권2호
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• pp.183-189
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• 2010

The balanced performance of dominant and non-dominant leg is very important to Taekwondo sparring. The purpose of this study was to investigate whether elite Taekwondo athletes would have balanced biomechanical performance and intra-limb coordination in executing different types of Taekwondo kicks. Twelve athletes(more than 10 year practice experience) participated in this study and performed six basic kicks(i.e., the front, roundhouse, side, back, thrashing, and turning-back kick). Results indicated no statistical difference on response time, peak kicking velocity, single limb vertical jump height, and angle-angle plot between dominant leg and non-dominant leg(p>.05). In conclusion, elite Taekwondo athletes had equivalent ability between dominant leg and non-dominant leg in performing Taekwondo kicks. This might be an advantage to elite athletes for Taekwondo sparring because they could use both leg without any restriction.

• 천문학논총
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• 제30권2호
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• pp.583-584
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• 2015

In this paper, the numerical results concerning different orbits of a 3D axisymmetric non-rotating galactic potential are presented. We use $Paczy{\acute{n}}ski^{\prime}s$ gravitational potential with different birth velocity distributions for the isolated old Neutron Star (NS) population. We note some smooth non-constant segments corresponding to regular orbits as well as the characterization of their chaoticity. This is strongly related to the effect of different kick velocities due to supernovae mass-loss and natal kicks to the newly-formed NS. We further confirm that the dynamical motion of the isolated old NSs in the gravitational field becomes obvious, with some significant diffraction in the symmetry of their orbital characteristics.

• 한국운동역학회지
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• 제17권3호
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• pp.165-172
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• 2007

The purpose of this study was to examine the effects of the result of hardship performance of the propulsion speed on the flying carmel spins during a Figure Skating. The subjects were five the korea national representative players. Kinematic variables were analyzed 5frame of the excursion phase by the three-dimensional motion analysis system(60Hz). The obtained conclusion were as follows: In this study, during the propulsion classify two groups as "type I" the acceleration patterns S3, S4 and "type II" the uniform velocity group S1, S2, S5. The results of percentage comparative analysis between type I and type II can be summarized as below: the height of jump(24%), the height of COM(25%), the maximum speed of Roundhouse Kick(21%), the judging technical score(18%), the flight time(13%), the velocity of spins(4%), the distance of flight(-6%) Analysis of the results on performance variables, the velocity pattern of the type I showed comparatively excellence than that of type II.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2023년도 제68차 하계학술대회논문집 31권2호
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• pp.435-436
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• 2023

공유 전동킥보드는 현존 대중교통을 이용하기에 애매한 짧은 구간이나 단거리 이동에 적합하고, 특정 노선과 정류장이 정해져 있지 않아 기동성이 높고 자유로워 이용률이 매년 증가하고 있다. 하지만 늘어난 사용자만큼 사건·사고도 늘어나고 있다. 킥보드 전담 부서가 없어 단속의 미흡으로 인해 대중교통이 운행하지 않는 심야에 음주 상태에서 운전하여 사고가 나는 경우가 부지기수이다. 본 프로젝트는 사회적 문제로 대두되고 있는 전동킥보드 음주운전 사고를 방지하고자 아두이노 센서를 기반으로 한 알코올 농도측정으로 음주자의 대여를 사전에 차단하기 위한 기능을 포함하고 있는 애플리케이션이다.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2024년도 제69차 동계학술대회논문집 32권1호
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• pp.233-234
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• 2024

본 논문은 킥보드 음주운전을 방지하기 위해 알코올 센서를 활용하여 킥보드 대여 전 사전에 음주운전을 방지하는 기능을 가지고 있는 애플리케이션이다. 기존 킥보드 대여 애플리케이션과는 다르게 제안한 애플리케이션은 킥보드 대여 전 API를 이용한 운전면허 검증 및 아두이노 알코올 센서를 이용한 알코올 수치를 측정하여 사용을 제한하고 사고를 미리 방지한다. 또한 사용자는 애플리케이션을 통해 지도에 표시된 킥보드의 마커를 클릭하여 대여 및 반납 시 카드 자동결제를 통해 간편하게 사용할 수 있도록 구현하였다.